package com.dc.designPattern._9_facade.impl;

/**
 * Description: 银幕
 * @author: gdc
 * @date: 2021/3/16
 * @version 1.0
 */
public class Screen {

    private static Screen INSTANCE = new Screen();

    public static Screen getInstance(){
        return INSTANCE;
    }

    public void up() {
        System.out.println(" 银幕 升起... ");
    }

    public void down() {
        System.out.println(" 银幕 降下... ");
    }
}
